TM 10-3930-675-24-1
TRANSMISSION CLUTCH CIRCUIT TROUBLESHOOTING - CONTINUED
0028 00
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Error Code 731 - Clutch K4 Open Circuit Failure. 1. Check
for
resistance.
If resistance is not as specified,
Disconnect connector X172
move the cab to the transport
located in the middle panel
position (TM 10-3930-675-10)
behind the operator's seat.
and remove the transmission
Check resistance at the loose
front access cover (WP 0142 00).
part of connector X172
between pins 2 and 7 (WP
should be 18 to 20 Ohms.
2. Check
for
resistance.
If resistance is not as specified or
Disconnect
and
inspect
the 827 connector is damaged,
connector 827 located on the
replace the transmission (WP
top of the transmission. Check
0224 00).
resistance at the mounted part
of connector 827 between pins
2 and 7 (WP 0048 00-15).
Resistance should be 18 to 20
Ohms.
3. Inspect the 827 connector and
If continuity is not present in
pins for damage and proper
either wire or connector 827 is
connection. Check continuity
damaged, replace engine and
of wires 1722 and 1727 (WP
transmission wiring harness (WP
0048 00-15).
0113 00).
4. Check
for
continuity. a. Repair or replace damaged
Disconnect ECU (793). Check
connector (WP 0113 00).
the connector and ECU pins b. Replace damaged ECU (793)
12, 13, and 56 for damage.
(WP 0080 00).
Check continuity of wires c. Replace open, damaged, or
A1722, A1727A, and A1727B
shorted wire.
(WP 0048 00-15).
0028 00-13
